/* eslint-disable */
/* Blob.js
 * A Blob implementation.
 * 2014-05-27
 *
 * By Eli Grey, http://eligrey.com
 * By Devin Samarin, https://github.com/eboyjr
 * License: X11/MIT
 *   See LICENSE.md
 */

/*global self, unescape */
/*jslint bitwise: true, regexp: true, confusion: true, es5: true, vars: true, white: true,
 plusplus: true */

/*! @source http://purl.eligrey.com/github/Blob.js/blob/master/Blob.js */

(function(view) {
    'use strict';
  
    view.URL = view.URL || view.webkitURL;
  
    if (view.Blob && view.URL) {
      try {
        new Blob();
        return;
      } catch (e) {}
    }
  
    // Internally we use a BlobBuilder implementation to base Blob off of
    // in order to support older browsers that only have BlobBuilder
    var BlobBuilder =
      view.BlobBuilder ||
      view.WebKitBlobBuilder ||
      view.MozBlobBuilder ||
      (function(view) {
        var get_class = function(object) {
            return Object.prototype.toString
              .call(object)
              .match(/^\[object\s(.*)\]$/)[1];
          },
          FakeBlobBuilder = function BlobBuilder() {
            this.data = [];
          },
          FakeBlob = function Blob(data, type, encoding) {
            this.data = data;
            this.size = data.length;
            this.type = type;
            this.encoding = encoding;
          },
          FBB_proto = FakeBlobBuilder.prototype,
          FB_proto = FakeBlob.prototype,
          FileReaderSync = view.FileReaderSync,
          FileException = function(type) {
            this.code = this[(this.name = type)];
          },
          file_ex_codes = (
            'NOT_FOUND_ERR SECURITY_ERR ABORT_ERR NOT_READABLE_ERR ENCODING_ERR ' +
            'NO_MODIFICATION_ALLOWED_ERR INVALID_STATE_ERR SYNTAX_ERR'
          ).split(' '),
          file_ex_code = file_ex_codes.length,
          real_URL = view.URL || view.webkitURL || view,
          real_create_object_URL = real_URL.createObjectURL,
          real_revoke_object_URL = real_URL.revokeObjectURL,
          URL = real_URL,
          btoa = view.btoa,
          atob = view.atob,
          ArrayBuffer = view.ArrayBuffer,
          Uint8Array = view.Uint8Array;
        FakeBlob.fake = FB_proto.fake = true;
        while (file_ex_code--) {
          FileException.prototype[file_ex_codes[file_ex_code]] = file_ex_code + 1;
        }
        if (!real_URL.createObjectURL) {
          URL = view.URL = {};
        }
        URL.createObjectURL = function(blob) {
          var type = blob.type,
            data_URI_header;
          if (type === null) {
            type = 'application/octet-stream';
          }
          if (blob instanceof FakeBlob) {
            data_URI_header = 'data:' + type;
            if (blob.encoding === 'base64') {
              return data_URI_header + ';base64,' + blob.data;
            } else if (blob.encoding === 'URI') {
              return data_URI_header + ',' + decodeURIComponent(blob.data);
            }
            if (btoa) {
              return data_URI_header + ';base64,' + btoa(blob.data);
            } else {
              return data_URI_header + ',' + encodeURIComponent(blob.data);
            }
          } else if (real_create_object_URL) {
            return real_create_object_URL.call(real_URL, blob);
          }
        };
        URL.revokeObjectURL = function(object_URL) {
          if (object_URL.substring(0, 5) !== 'data:' && real_revoke_object_URL) {
            real_revoke_object_URL.call(real_URL, object_URL);
          }
        };
        FBB_proto.append = function(data /*, endings*/) {
          var bb = this.data;
          // decode data to a binary string
          if (
            Uint8Array &&
            (data instanceof ArrayBuffer || data instanceof Uint8Array)
          ) {
            var str = '',
              buf = new Uint8Array(data),
              i = 0,
              buf_len = buf.length;
            for (; i < buf_len; i++) {
              str += String.fromCharCode(buf[i]);
            }
            bb.push(str);
          } else if (get_class(data) === 'Blob' || get_class(data) === 'File') {
            if (FileReaderSync) {
              var fr = new FileReaderSync();
              bb.push(fr.readAsBinaryString(data));
            } else {
              // async FileReader won't work as BlobBuilder is sync
              throw new FileException('NOT_READABLE_ERR');
            }
          } else if (data instanceof FakeBlob) {
            if (data.encoding === 'base64' && atob) {
              bb.push(atob(data.data));
            } else if (data.encoding === 'URI') {
              bb.push(decodeURIComponent(data.data));
            } else if (data.encoding === 'raw') {
              bb.push(data.data);
            }
          } else {
            if (typeof data !== 'string') {
              data += ''; // convert unsupported types to strings
            }
            // decode UTF-16 to binary string
            bb.push(unescape(encodeURIComponent(data)));
          }
        };
        FBB_proto.getBlob = function(type) {
          if (!arguments.length) {
            type = null;
          }
          return new FakeBlob(this.data.join(''), type, 'raw');
        };
        FBB_proto.toString = function() {
          return '[object BlobBuilder]';
        };
        FB_proto.slice = function(start, end, type) {
          var args = arguments.length;
          if (args < 3) {
            type = null;
          }
          return new FakeBlob(
            this.data.slice(start, args > 1 ? end : this.data.length),
            type,
            this.encoding
          );
        };
        FB_proto.toString = function() {
          return '[object Blob]';
        };
        FB_proto.close = function() {
          this.size = this.data.length = 0;
        };
        return FakeBlobBuilder;
      })(view);
  
    view.Blob = function Blob(blobParts, options) {
      var type = options ? options.type || '' : '';
      var builder = new BlobBuilder();
      if (blobParts) {
        for (var i = 0, len = blobParts.length; i < len; i++) {
          builder.append(blobParts[i]);
        }
      }
      return builder.getBlob(type);
    };
  })(
    (typeof self !== 'undefined' && self) ||
      (typeof window !== 'undefined' && window) ||
      this.content ||
      this
  );
  